| Value | Category | Cases | |
|---|---|---|---|
| 0 | 321 | 
                                    
                                    78.5%
                                 | |
| 1 | 54 | 
                                    
                                    13.2%
                                 | |
| 2 | 22 | 
                                    
                                    5.4%
                                 | |
| 3 | 7 | 
                                    
                                    1.7%
                                 | |
| 4 | 3 | 
                                    
                                    0.7%
                                 | |
| 5 | 1 | 
                                    
                                    0.2%
                                 | |
| 6 | 1 | 
                                    
                                    0.2%
                                 | |
| Sysmiss | 513 |